Subsection (2) applies in relation to any decision of the Secretary of State which—
is either—
a refusal to issue a certificate of naturalisation under section 6 or 18 of the British Nationality Act 1981 to an applicant under that section, or
a refusal to grant an application of the kind mentioned in section 41A of that Act (applications to register an adult or young person as a British citizen etc.), and
is certified by the Secretary of State as a decision that was made wholly or partly in reliance on information which, in the opinion of the Secretary of State, should not be made public—
in the interests of national security,
in the interests of the relationship between the United Kingdom and another country, or
otherwise in the public interest.
The applicant to whom the decision relates may apply to the Special Immigration Appeals Commission to set aside the decision.
In determining whether the decision should be set aside, the Commission must apply the principles which would be applied in judicial review proceedings.
If the Commission decides that the decision should be set aside, it may make any such order, or give any such relief, as may be made or given in judicial review proceedings.